2000 BMW Z8 key

23
EWS
Replacement Procedures
Keys
Up to 6 additional keys may be ordered as replacement keys. The EWS II control module
is codeable for only 10 keys (4 delivered with vehicle and 6 replacement).
EWS III (3.3) Control Module
Replacement EWS III (3.3) Control Modules are ordered VIN specific. The module is
received with the same “Rolling Code Table” as the original module. Once ZCS coded, the
DISplus software “resets” the current rolling code in the DME back to “Rolling Code” #1,
providing synchronization of both modules.
DME Control Modules
Replacement DME Control Modules are “off the shelf” and must be programmed for the
specific vehicle. After programming the DISplus software informs the EWS III (3.3) control
module that a new DME has been installed. The next time the ignition is switched on, the
EWS III (3.3) module will send the entire “Rolling Code Table” to the DME and reset it to
“Rolling Code” #1.
The DME will automatically burn the “Rolling Code Table” into its memory.
Once the table
has been burned into the DME memory it can NOT
be changed. For this reason once a
DME is “Married” to the vehicle it will not work in any other vehicle.
Under certain condition “Alignment” of the DME and EWS III (3.3) modules may still be nec-
essary. The alignment procedure only resets the code table to code #1 it does not change
the “Rolling Code Table”.
Key Activation
Keys that are lost or stolen may be deactivated or made to not operate the starter func-
tions. The SERVICE FUNCTIONS of the DISplus or MoDic for EWS III (3.3) contains a
“bar/release code” function that activates and deactivates keys of the EWS III (3.3). Any
key may be “Barred” except the key in the ignition at the time of deactivation. The lost or
stolen key can be identified by the identification of the remaining keys.
There is no limit to the number of times a key can be activated/deactivated.
Workshop Hint:
While checking key operation, don’t forget to
wait 10 seconds before inserting the next key.
You can not BARthe key in the ignition.Workshop Hint:
A dead key battery does not affect vehicle start-
ing.
Keys without replaceable batteries are not
charged if the ignition is in the KLO (Off) posi-
tion.

24
EWS
EWS III D
EWS III D is installed on E36/7 beginning of production 99 Model Year. The system
does not have a K-Bus input.
Purpose of the System
The purpose of the EWS III D system is to provide the highest level of drive away protec-
tion available to vehicles without a K-Bus. The input side of the control module functions
the same as an EWS II (no bus inputs) system with the exception of an integrated EWS
module and transmitter/receiver module. The output side functions similar to an EWS III
(3.3) system with “Rolling codes”. The EWS III D control module is on the D-Bus for diag-
nostics.
Individual component inputs and system operation is the same as the mentioned previous
systems.
Replacement Procedures
Keys
Up to 6 additional keys may be ordered as replacement keys. The EWS III D control mod-
ule is codeable for only 10 keys (4 delivered with vehicle and 6 replacement).
EWS III D Control Module
Replacement EWS III D Control Modules are ordered VIN specific. The module is received
with the same “Rolling Code Table” as the original module. Once ZCS codes, the DISplus
software “resets” the current rolling code in the DME back to “Rolling Code” #1, providing
synchronization of both modules.
DME Control Modules
Replacement DME Control Modules are “off the shelf” and must be programmed for the
specific vehicle. After programming the DISplus software informs the EWS III D control
module that a new DME has been installed. The next time the ignition is switched on, the
EWS III D module will send the entire “Rolling Code Table” to the DME and reset it to
“Rolling Code” #1.
The DME will automatically burn the “Rolling Code Table” into its memory.
Once the table
has been burned into the DME memory it can NOT
be changed. For this reason once a
DME is “Married” to the vehicle it will not work in any other vehicle.

25
EWS
Under certain condition “Alignment” of the DME and EWS III D modules may still be nec-
essary. The alignment procedure only resets the code table to code #1 it does not change
the “Rolling Code Table”.
Key Activation
Keys that are lost or stolen may be deactivated or made to not operate the starter func-
tions. The SERVICE FUNCTIONS of the DISplus or MoDic for EWS III D contains a
“bar/release code” function that activates and deactivates keys of the EWS III D. Any key
may be “Barred” except the key in the ignition at the time of deactivation. The lost or stolen
key can be identified by the identification of the remaining keys.
There is no limit to the number of times a key can be activated/deactivated.
8510130
Pin Assignments
EWS III D
Workshop Hint:
With E46 Style diagnostics, check the following status’ in Diagnosis, Control Unit Functions, EWS:
• Starter Status:
Park/Neutral, BC Code active, Engine Speed, Double lock status, Starter Enabled
• Key Status:
Transmits, Changing code, Key I.D., Key number, Key Password, Key disabled
• DME Wire Status
• Selector lever/Clutch Status • Central Locking Status • Input Power •BC Code via K-Bus

26
EWS
System Introduced Model FeaturesOne
Touch
Starting
Drive Away
Protection9/93 - 12/93 AllInjection/Ignition
Disabled if car
In Double lockNo
EWS I 1/94 - 1/95 AllStarter
Immobilizer
Injection/Ignition
DisableNo
EWS IIE-36 To End of
Production
E36/7To MY
1998
E-34 To End of
Production
E-38 To M.Y
1997
E-38 To 3/97
Production
EWS III 9/96 E 38 MY 97
3.2
E38 MY 1998
From 5/97
Production
E39 From 9/97
ProductionE39 From 3/97
ProductionTransponder
Key
Starter
Interlock
DME - EWS
ISN CodeE38 Late MY
1997
Transponder Key
Starter Interlock
IDME-EWS
ISN Code
K-BusYe s
V-12 and V-8
Only
EWS III
3.35/97Transponder Key
Starter Interlock
K-Bus
DME-EWS
Rolling CodeYe s
V-12 and V-8
Only
EWS
EWS III D MY 1999 Z3 OnlyTransponder Key
Starter Interlock
DME-EWS
Rolling CodeNo 1/95
85101103aa

27
EWS
Workshop Exercises
1.
Vehicle Model:
Install EWS “V” cable adapter and 26 pin Breakout Box, perform pin-out.
2.
Vehicle Model:
Display the starter enabled status:
Display the Status, DME wire:
Perform the EWS-DME communication Test Plan:
Display the Date of Manufacture of EWS Control Module:
Print the FN of the EWS Control Module:
Perform “key status” and print:
3.
Vehicle Model:
Display the “key status”:
Bar key #3:
Attempt to start engine with “Barred Key”, display key status in EWS Diagnosis
Requests:
Perform EWS-DME Test plan:
Display locking status in EWS:
Display P/N input at EWS:
Perform Toroidal coil Test Plan:

30
EWS
Review Questions
1. Why was Drive Away Protection introduced?
2. What component was added in 1/94 to Drive Away Protection?
3. Name the major components of EWS II.
4. Describe how th transponder chip in the key is powered.
5. What were the main function of the Transmitter/Receiver module?
6. What is an ISN and where does it originate?
7. Describe the operations to be performed when replacing the EWS II module.
8. What are the key differences between EWS II and EWS III (3.2).
9. How many keys total may be coded to an EWS III (3.3) control module?
10. Explain the operation of the “Rolling Code”.